1: dnl Process this file with autoconf to produce a configure script.
2:
3: #Copyright (C) 1995,1996 Free Software Foundation, Inc.
4:
5: #This file is part of Gforth.
6:
7: #Gforth is free software; you can redistribute it and/or
8: #modify it under the terms of the GNU General Public License
9: #as published by the Free Software Foundation; either version 2
10: #of the License, or (at your option) any later version.
11:
12: #This program is distributed in the hope that it will be useful,
13: #but WITHOUT ANY WARRANTY; without even the implied warranty of
14: #MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.#See the
15: #GNU General Public License for more details.
16:
17: #You should have received a copy of the GNU General Public License
18: #along with this program; if not, write to the Free Software
19: #Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20:
21: AC_INIT(engine.c)
22: AC_CONFIG_HEADER(config.h)
23:
24: AC_ARG_ENABLE(force-reg,
25: [ --enable-force-reg Use explicit register declarations if they appear in
26: the machine.h file. This can cause a good speedup,
27: but also incorrect code with some gcc versions on
28: some processors (default disabled).],
29:
30: AC_DEFINE(FORCE_REG))
31: dnl this is not quite according to the autoconf manual, it causes a replacement
32: AC_ARG_ENABLE(direct-threaded,
33: [ --enable-direct-threaded Force direct threading. This may not work on
34: some machines and may cause slowdown on others.
35: (default processor-dependent)],
36: AC_DEFINE(DIRECT_THREADED))
37: AC_ARG_ENABLE(indirect-threaded,
38: [ --enable-indirect-threaded Force indirect threading. This can cause a
39: slowdown on some machines.
40: (default processor-dependent)],
41: AC_DEFINE(INDIRECT_THREADED))
42:
43: AC_ARG_WITH(debug,
44: [ --with-debug specifies option -g to compile with debug info (default)
45: --without-debug omits the -g switch and creates smaller images on
46: machines where "strip" has problems with gcc style
47: debugging informations.],
48: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
49:
50: CFLAGS=$CFLAGS
51:
52: AC_PROG_CC
53:
54: if test "$GCC" = "yes"
55: then
56: echo "Fine, gcc is available"
57: else
58: cat <<'EOF'
59: Gforth requires GCC-2.0 or higher (it uses GNU C extensions).
60: It does not work with other C compilers. Please install the GNU C compiler,
61: and try again (or search for a binary distribution for your platform).
62: EOF
63: exit 1
64: fi
65:
66: AC_SUBST(CC)
67: AC_SUBST(GCCLDFLAGS)
68: AC_SUBST(DEBUGFLAG)
69:
70: dnl the following macro produces a warning with autoconf-2.1
71: AC_CHECK_SIZEOF(char *)
72: case "$ac_cv_sizeof_char_p" in
73: 2)
74: wordsize=16
75: ;;
76: 4)
77: wordsize=32
78: ;;
79: 8)
80: wordsize=64
81: ;;
82: esac
83:
84: AC_CHECK_SIZEOF(short)
85: AC_CHECK_SIZEOF(int)
86: AC_CHECK_SIZEOF(long)
87: AC_CHECK_SIZEOF(long long)
88:
89: ac_cv_int_type_cell=none
90: case "$ac_cv_sizeof_char_p" in
91: $ac_cv_sizeof_short)
92: ac_cv_int_type_cell=short
93: ;;
94: $ac_cv_sizeof_int)
95: ac_cv_int_type_cell=int
96: ;;
97: $ac_cv_sizeof_long)
98: ac_cv_int_type_cell=long
99: ;;
100: $ac_cv_sizeof_long_long)
101: ac_cv_int_type_cell="long long"
102: ;;
103: esac
104: if test "$ac_cv_int_type_cell" != int; then
105: echo "So, sizeof(pointer)!=sizeof(int); looks like a DOS C compiler to me."
106: echo "Since you don't have a proper C on this machine, that's one more reason"
107: echo "to use Forth;-)"
108: fi
109: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell)
110:
111: ac_cv_int_type_double_cell=none
112: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
113: $ac_cv_sizeof_short)
114: ac_cv_int_type_double_cell=short
115: ;;
116: $ac_cv_sizeof_int)
117: ac_cv_int_type_double_cell=int
118: ;;
119: $ac_cv_sizeof_long)
120: ac_cv_int_type_double_cell=long
121: ;;
122: $ac_cv_sizeof_long_long)
123: ac_cv_int_type_double_cell="long long"
124: ;;
125: esac
126: if test "$ac_cv_int_type_double_cell" = none; then
127: echo "Emulating double-cell arithmetic. This may be slow."
128: echo "If you find this unacceptable, ask the GCC maintainers to provide proper"
129: echo 'long longs for your machine (the GCC manual states that they \"are twice as'
130: echo "long as \`long int\'\")."
131: LIBOBJS="$LIBOBJS dblsub.o"
132: AC_DEFINE(BUGGY_LONG_LONG)
133: else
134: AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell)
135: fi
136:
137: #terminology is a bit unusual here: The host is the system on which
138: #gforth will run; the system on which configure will run is the `build'
139: AC_CANONICAL_HOST
140: case "$host_cpu" in
141: hppa*)
142: mach_h=hppa
143: LIBOBJS="cache.o"
144: LDFLAGS="-Xlinker -N"
145: LIBS="-L/lib/pa1.1/"
146: ;;
147: sparc*)
148: mach_h=sparc
149: ;;
150: i386|i486|i586)
151: mach_h=386
152: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
153: #!! direct/indirect threading switch
154: #!! -m486 flag
155: ;;
156: m68k)
157: mach_h=m68k
158: CFLAGS="$CFLAGS -fomit-frame-pointer -traditional-cpp"
159: ;;
160: mips*)
161: mach_h=mips
162: #link text and data segment into the same 256M region!
163: GCCLDFLAGS="-Xlinker -T -Xlinker 10000000 -Xlinker -D -Xlinker 10400000"
164: ;;
165: alpha*)
166: mach_h=alpha
167: ;;
168: *)
169: echo "No direct threading support for $host_cpu, using indirect threading."
170: echo "Using a generic machine description."
171: echo "I'll assume that C floats and doubles are represented by IEEE single and"
172: echo "double numbers. If this is not so, SF@ etc. will not work correctly."
173: echo "FLUSH-ICACHE will do nothing, so END-CODE may not work properly!"
174: mach_h=32bit
175: esac
176: AC_SUBST(host)
177: AC_SUBST(ENGINE_FLAGS)
178:
179: dnl Now a little support for DOS/DJGCC
180: AC_SUBST(MAKE_EXE)
181: MAKE_EXE=""
182:
183: PATHSEP=":"
184: AC_SUBST(PATHSEP)
185: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP')
186:
187: dnl copy commands for systems that don't have links
188: AC_SUBST(LINK_KERNL16L)
189: LINK_KERNL16L=""
190: AC_SUBST(LINK_KERNL16B)
191: LINK_KERNL16B=""
192: AC_SUBST(LINK_KERNL32L)
193: LINK_KERNL32L=""
194: AC_SUBST(LINK_KERNL32B)
195: LINK_KERNL32B=""
196: AC_SUBST(LINK_KERNL64L)
197: LINK_KERNL64L=""
198: AC_SUBST(LINK_KERNL64B)
199: LINK_KERNL64B=""
200:
201: #if test $host_os=dos
202: #then
203: # echo Configuring for DOS!!!
204: # MAKE_EXE="coff2exe gforth"
205: # LINK_KERNL32L='$(CP) kernl32l.fi kernel.fi'
206: #fi
207:
208: dnl the following macro produces a warning with autoconf-2.1
209: AC_C_BIGENDIAN
210: AC_SUBST(KERNEL)
211: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
212: if test $ac_cv_c_bigendian = yes; then
213: bytesex=b
214: KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
215: else
216: bytesex=l
217: KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
218: fi
219:
220: dnl Checks for programs.
221: AC_PROG_LN_S
222: AC_PROG_INSTALL
223:
224: dnl Checks for library functions
225: dnl This check is just for making later checks link with libm.
226: dnl using sin here is no good idea since it is built-into gcc and typechecked
227: AC_CHECK_LIB(m,asin)
228: AC_FUNC_MEMCMP
229: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
230: AC_CHECK_FUNCS(sys_siglist)
231: AC_DECL_SYS_SIGLIST
232: AC_CHECK_FUNC(getopt_long,getopt_long="",getopt_long="getopt.o getopt1.o")
233: AC_SUBST(getopt_long)
234: AC_CHECK_FUNCS(rint expm1 log1p)
235: AC_REPLACE_FUNCS(ecvt)
236: dnl No check for select, because our replacement is no good under
237: dnl anything but DOS
238:
239: kernel_fi=kernl${wordsize}${bytesex}.fi
240: AC_SUBST(kernel_fi)
241:
242: AC_LINK_FILES(${mach_h}.h $kernel_fi,machine.h kernel.fi)
243: AC_OUTPUT(Makefile,echo timestamp > stamp-h)
244:
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